C Programming Practice Test 2

1. What will be the output of the following C code?

    #include <stdio.h>
    void main()
    {
        int i = 0;
        for (i = 0;i < 5; i++)
            if (i < 4)
            {
                printf("Hello");
                break;
            }
    } 

2. What will be the output of the following C code?

    #include <stdio.h>
    void main()
    {
        int b = 5 + 7 * 4 - 9 * (3, 2);
        printf("%d", b);
    } 

3. What will be the output of the following C code? (Assuming that we have entered the value 1 in the standard input)

    #include <stdio.h>
    void main()
    {
        int ch;
        printf("enter a value between 1 to 2:");
        scanf("%d", &ch);
        switch (ch, ch + 1)
        {
           case 1:
              printf("1\n");
              break;
           case 2:
              printf("2");
              break;
        }
    } 

4. What will be the output of the following C code?

    #include <stdio.h>
    int x;
    void main()
    {
        if (x)
            printf("hi");
        else
            printf("how are u");
    } 

5. What will be the output of the following C code?

    #include <stdio.h>
    int main()
    {
        int *p = NULL;
        for (foo(); p; p = 0)
            printf("In for loop\n");
            printf("After loop\n");
    } 

6. What will be the output of the following C code?

    #include <stdio.h>
    int main()
    {
        int x = 97;
        switch (x)
        {
           case 'a':
              printf("yes ");
              break;
           case 97:
              printf("no\n");
              break;
        }
    } 

7. What will be the output of the following C code?

    #include <stdio.h>
    void main()
    {
        double b = 5 & 3 && 4 || 5 | 6;
        printf("%lf", b);
    } 

8. What will be the output of the following C code?

    #include <stdio.h>
    int main()
    {
        int a = 1;
        if (a)
            printf("All is Well ");
            printf("I am Well\n");
        else
            printf("I am not a River\n");
    } 

9. How many times i value is checked in the following C code?

    #include <stdio.h>
    int main()
    {
        int i = 0;
        do {
            i++;
            printf("in while loop\n");
        } while (i < 3);
    } 

10. What will be the output of the following C code? (Assuming that we have entered the value 1 in the standard input)

    #include <stdio.h>
    void main()
    {
        int ch;
        printf("enter a value between 1 to 2:");
        scanf("%d", &ch);
        switch (ch)
        {
           case 1:
              printf("1\n");
           default:
              printf("2\n");
        }
    }